Improvement in corn and cob mills



UNiTfED STATES RATENT OFFICE.

JAOOBfO. J OYOE, OF CINCINNATI, OHIO.

IMPROVEMENT IN CORN AND COB MILLS.

Spooication forming part of Letters Patent No. 15,488, dated August 5, 1854.

T0 @ZZ whom it may concern.,-

Be it known that I, JACOB O. JOYCE, of Cin cinnati, in the county of Hamilton and State of Ohio, have invented certain new and useful Improvements in Portable Grain and Feed Mills; and I do hereby declare the following to be a full, clear, and exact description of the same, reference being had to the accompanying drawings, making a part thereof, in whichu Figure l represents a birds-eye view of the mill. Fig. 2 represents' a view from the under side of the upper cone. Fig. 3 represents a top view of the lower cone. Fig. 4c represelts a central vertical section through the mi l.

Similar letters where they occur in the several figures denote like parts.

The nature of my invention relates to the peculiar form and arrangement of the crushing-teeth upon the under side of the upper cone and upon the upper side of the lower cone, so that in moving one set past or through between the other set they shall gradually approach each other, thus contracting the Spaces between them and more effectually crushing the material for the after operation of grinding.

To enable others skilled in the art to make and use my. invention, I will proceed to describe the same with reference to the drawings. By reference yto Fig. 4, A represents the hopper which forms the top part of the outer cone B, said outer coneB being provided with lugs C, to which the sweeps for driving theA mill by horse-power may be attached.

D is the under cone, supported on suitable legs E, and remains fixed while the upper cone turns around upon it and is made adjustable on it, as will be hereinafter described.

F represents the hub of the upper cone, from which extend four arms G G G G, connected at their outer ends to the inner periphery of the upper cone B. On the under side of the hub F, connected Iirmly with it, is a circular crushing disk or wheel I-I, provided with sharp spur-shaped teeth c ce, and on the under side of the arms and permanently connectedto or cast with them, and about midway between the hub and periphery of the cone, are the double-toothed segments I, provided with teeth b b on both sides and made wedge-shaped from their points c (which go foremost) to their heels CZ, for a purpose to be described in connection with similarly-constructed 'segments on the lower cone. The inner periphery of the upper cone at that part where the arms G imite with it is'provided with quite coarseteeth e, which run into shallower grooves J, and these grooves J are again subdivided into finer grooves f, extending to the outer and lower periphery of the upper cone. The under cone D has upon its inclined face double sets or pairs of segments K K which are provided also with teeth h upon both sides. These pairs of segments K K are so placed or arranged on the lower cone as that the segments I on the upper cone shall passes?.

through between them, and the teeth on the respective segments I K K are so arranged as that the points of one shall move toward or meet the points of the others, as seen in red lines, Fig. 3. As before described, the segments I are made slightly wedge -shaped from their points c to their rear d. This makes aline drawn through the points of their teeth eccentric, while the'line drawn through the points of the teeth of the pairs of segments K K would be concentric with the center of motion. The eccentricity, may, however, be divided between the segments on both cones, the object being to have their teeth gradually 'approach each other as they pass, so as to gradually contract the space between them. Outside of the segments K commence broad shallow grooves or furrows L, which are subdivided into narrow shallow furrows i, which extend to the perimeter or base of the cone. The lower cone D is hollow on the under side for the purpose of making it light and of easy portability, and a boss M is cast thereon, prof jecting downward suiiiciently far to form an adjustable support or bush for the spindle or shaft N of the upper cone B. A hole lo is left through the bottom of the boss to allow the screw part of the spindle to pass through, as the upper cone may be raised or lowered upon the lower one to adjust it properly for coarser or finer work, and a slot Z is formed through the boss transversely, into which is slid the nut O, said slotforminga bed for the nut to hold it firmly while the screw part of the spindle is turned in it.

fn is a collar upon the lower part ot the spindle which rests upon the nut O. y

P is a bush, the lower part p of which is 2 ames square and [its into a. square hole q, Fig. 3, through the crown of the cone l), so that the bush shall not turn with the upper cone` Upon said bush is a collar 7', on which rest-s the upper cone by the shoulders s, Fig. 4C. Near the top of the spindle, over a square portion of the bush, is arranged an arin Q, let down over said square part by a countersink on the under side 'of its hub. Said arnris, of course, stationary, as it is connected to the bush, which, as before stated, does not rotate and is intended (being placed above the arnls G of the upper moving cone) to prevent the corn or other material from ridingaround on the arms and force it into the spaces, where it is caught between the crushing-surfaces heretofore described and reduced preparatory to its ,entering t-he liner furrows at the skirts of the cones, Where it is iinished.

Ris a handle with a square opening,r in it fittingv over asimilar square part u of` the spindle'N, so ais-to turn said spindle, and by means of the several parts connected with it raise or lower to adjust-andliold adjusted the upper to the lower cone.

fr is a nut on top of the spindle for holding the several parts together.

For lthe larger class of mills the toothed segments may be increased in number, both in the direction of the radii of the cones and circunlterentially.

Having thus fully described the nat-ure of my invention, what I claim therein as new, and desire to secure by Letters Patent, is-

The arrangement of the segments I on the upper cone and the segments K K on the lower cone so that the former shall pass through between the latter, `gradually* contracting the spaces between their crushingsurfaces, substantially as set forth.

JACOB O. JOYCE. lllitnesses:

JAMES BIRNEY, ALFRED THOMAS. 

